wikilabels_dfd.tex

% Data flow diagram
% Template adapted from http://www.texample.net/tikz/examples/data-flow-diagram/ by David Fokkema
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes}

% Custom, should be provided in the same directory.
\usepackage{datastore}

% Disable page number for better SVG.
\pagenumbering{gobble}

\begin{document}
\begin{tikzpicture}[
  font=\sffamily,
  every matrix/.style={ampersand replacement=\&,column sep=2cm,row sep=2cm},
  interface/.style={draw,thick,regular polygon,regular polygon sides=4,inner sep=0},
  process/.style={draw,thick,rounded corners,inner sep=.3 cm},
  datastore/.style={draw,thick,shape=datastore,inner sep=.3cm},
  to/.style={->,>=stealth',shorten >=1pt,semithick,font=\sffamily\footnotesize},
  every node/.style={align=center}]

  % Position the nodes using a matrix layout
  \matrix{
    \node[interface] (researcher) {Researcher};
      \& \node[interface] (mediawiki) {MediaWiki \\ API}; \\
    \node[process] (design) {Build experiments}; \\
    \node[datastore] (experiments) {Experiments};
      \& \node[process] (wikilabels) {Wiki labels \\ UI};
        \& \node[interface] (keyer) {Labeler}; \\
      \& \node[process] (labels) {Completed campaigns}; \\
  };

  \node[below=1cm, align=flush center] (title) at (labels)
  {\Large Wiki labels \\ \normalsize data flow diagram \\
  };

  % Draw the arrows between the nodes and label them.
  \draw[to] (researcher) -- node[midway,left] {research questions \\ revision curation \\ wikis} (design);
  \draw[to] (design) -- (experiments);
  \draw[to] (mediawiki) -- node[midway,right] {wiki siteinfo} (wikilabels);
  \draw[to] (wikilabels) to[bend left=25] node[midway,above] {cases} (keyer);
  \draw[to] (keyer) to[bend left=25] node[midway,below] {classification labels} (wikilabels);
  \draw[to] (experiments) -- node[midway,right] {} (wikilabels);
  \draw[to] (wikilabels) -- node[midway, left] {judgements} (labels);
\end{tikzpicture}
\end{document}